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Java lang runtimeexception error occurred

0- alpha3 on Pixel running 8. Here' s the stacktrace: Fatal Exception: java. RuntimeException: An error occurred while executing doInBackground( ) at android. I just needed to add. - keep public class org. * * { public * ; }. to my proguard- android. You have not initialized your ArrayList< HashMap< String, String> > contactList so i guess you must be getting the nullpointer error. Make sure you initialize your ArrayList in your onCreate( ) as below: protected void. You are running the AsyncTask like new MyAsyncTask( ). execute( ) ; which means you are not passing any argument to it.

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  • Video:Runtimeexception occurred error

    Lang occurred java

    But in doInBackground method you are trying to get a value at String newstr= args[ 0] ; but args array has. I tried with ToggleButton and Switch in Eclipse. I put exactly what I used in android studio. I copy all the code without any change. Can' t understand the problem. startActivity( new Intent( " com. or ListView list = ( ListView) findViewById( R. here you are trying to access UI elements from Background Thread means from AsyncTask doInBackground which is appears you don' t have the appropriate permissions. Add this line to your manifest. xml < uses- permission android: name= " android. INTERNET" > < / uses- permission>. Create a libs folder and put gson in there, then add the folder to the library path. 057: E/ AndroidRuntime( 3127) : Caused by: java.

    NullPointerException: 44: 33. 057: E/ AndroidRuntime( 3127) : at com. MyServiceProf$ myPostData. doInBackground( MyServiceProf. This is probably because you' re trying to display something on doInBackground( ). doInBackground runs in a worker thread which cannot do any UI work ( including showing Toasts, which is what you' re doing). Instead, all UI work should be.